Wrench.



G. ANDERSBN. WRENCH. APPLICATION FILED SEPT. 20, 1911.

19099,@@51 I f Patented June 18,1912.

2 SHEETS-SHEET l.

QQQM; y f ML G. ANDER'SEN. WRENCH.

APPLICATION FILED SEPT. 2o, 1911.

1,029,90 Patented June 18, 1912.

2 SHEETS-SHEET 2.

maman i saperne rarnnfr ommen;

GEORGE .ANDERSEN, OF CHICAGO, ILLINOIS.

WRENCH.

Specification of Letters Patent.

`Patented Junel, i912.

Application tiled September 20, 1911. Serial No. 650,432.

l socket wrenches and has for its object the production of a wrench of this character which Will be of an adjustable nature so as sizes.

to adapt the same for use in connection With nuts or other simllar objects of varlous A further object is the production of a Wrench as mentioned which will be of durable and economical construct-ion and eliicient in use. A

f Other objects will appear hereinafter. With these objects in view my invention consists in the combinations and arrangements of parts hereinafter described and claimed.`

My invention will be best understood by reference to the accompanying drawings forming a part of this which,

Figure lA is a substantially central longitudinal section of a Wrench embodying my invention, Fig. 2 is a detail sectional view of the Wrench, the section being taken on -substantially line xof Fig. 4, Fig. 3 isy a top plan View of the wrench, and Figs. 4

.and 51 are transverse sectionsv taken on substantially lines of Fig. l.

Y The preferred form o f construction as illustrated in the drawings comprises a disk 1 which is carried upon one end of a stem 2 to which said disk is rigidly secured. Arranged `about the disk l is a plurality ot jaw members 3, the same being tiltably mount-ed intermediate their extremities uponvthe periphery-of said disk as cle rly shown in Fig. l; said periphery being referably formed with a single screw thread for engagement y-y and z-z respectively with screw threads correspondingly formed upon the inner surfaces-of said jaw members,

such provision being made to permit of ready it being clear that with Athis construction the disk 1 may be readily threaded into proper position intermediate 'the' jav members. Also with this construction it is apparent that said jaw` members will be held againstlongitudinal movement upon the 4periphery of the disk 1 specification, and in v 3, the same engagingthe external 'threads of said jaw members are two nuts 5 and G, the periphery of said nuts being preferably knurled to facilitate manual rotation thereof. The nuts 5 and 6 are adapted by adjustment of the positions thereof Aupon the jaw members 3 to effect tilting adjustment of the latter, it being clear that by rotating said nuts to move the same upwardly with reference to said jaw members, the lower ends of the latter will be spread and that by lowering S .id nuts with reference to said jaw members the said ends of the latter will be contracted, it being clear that simultaneous adjustment of the nuts 5 and (i is required in effecting tilting adjustment. of said jaw members. Thus said jaw members majv be adjusted so as to adapt the same for engagement with edges of various sizes, the lower ends thereof being provided with engaging members 3 pivoted thereto for engagement with the objects to be grasped.

Slidably mounted upon the stem 2 is a gear member 7, said stem being preferably squared and said gear provided with a socket of corresponding form so as to ctlect locking of said gear against rotation on said stem. Depending from the gear 7 adjacent the periphery thereof are tapering fingers S which are adapted to engage between the adjacent jaw members 3 so to effect locking'of the latter to the stem i2. The lingers 8 are made tapering in form as shown, in order to'adapt the same for insertion between the jaw members 3 regardless of the tilted positions thereof. The exterior surfaces of the fingers 8 which are cylindrical in form are provided with screw-thrcads for engagement by the internal threads of the nut 5 so thatin operation the latter will serve to lock said lingers 8 and hence the gear 7 against relative longitudinal movement. l l' The gear is concave at its upper side and is provided with gear teeth as clearly shown in Fig. l, the periphery of said gear being also concave and alsoprovided with gear teeth for employment in the mannerk ,hereinafter described. Meshing with the gearteeth in the upper side of the gear 7 is a substantially spherical gear'or'pinion 9 which is adjustably secured upon a stein 10 mounted in a brace 11 of usual form. The

outer end of the brace stem 10 is provided With a swivel 12 which is pivotally connected With a ring 13 loosely slidable inthe grooved periphery of a nut 14. threaded upon the stem 2; a lock-nut' 15x-being also threaded upon' said stem for cooperation with the nut 14 for securing the latter in positions of adjustment upon said stem. The outerbend of vthe stem 10 and the brace 11 are maintained in proper positions through the medium of a longitudinal ad are rotatably mounted and held in av positive position relative to the remainder of the construction with the gear member 9 .engaging the teeth in the upper side of the gear 7, and so that by rotation of said brace in the ordinary manner the gear 7and hence 4the jaw members 3 may be rotated by an operator positioned at right anglesto the nut, bolt or other object to be turned. By reason of the adjustment afforded the nut 14 upon the stem 2, the angular position of the stem 10 and hence t-he brace 11 maybe altered .Without eifectingthe disengagement of the gear member 9'ivitli the gear 7 angular adjustment of the stem 10 and brace 11 obviously requiring corresponding longitudinal adjustment of .the brace rod 16. With this'construction then it will be' seen that the wrench is rendered adjustable so that the saine may be used for engagement and rotationl of nuts, bolts or other similar objects positioned at various angles. The construction-is such that if desired the connection of the stem 10 with the nut 14 and of the brace rod 16 with the nut 5 may be in` terchanged, in which event the nut 9 will bemoved longitudinally upon the stem 10 and engaged with tlie'teeth in the periphery of engaged is readily accessible the stem 2 may ing to adjust the'samc for engagement with the object which itis desired to engage.

After adjusting vsaid jaw members to the proper position the gear 7 is slid down- Wardly upon the stem l2, the lingers 8 being' engaged betvveen the adjacent ends of said j aw members as shown in Fig. 1. The nuts 5 and 6 are then threaded in opposite directions upon the jaw members 3. to eect the llocking thereof in their'positions of adjustment, said adjustment of the nut 5 simultaneously effecting the locking of the ngers 8 against -longitudinal movement vby reason of the internal teeth of said nut engaging the external teeth of said fingers, as clearly shown in Fig. 2. This completes the adjustmentof the Wrench for rotation in either of the manners above set forth. j-

,A Wrench of the construction set. forthv will be found to bestrong and durable'and vof high etliciency in use.

While I have illustrated 4and described the preferred form of construction for carrying my invention into eii'ect, this iscapable of variation and modications without departing from the spirit of the invention.l I,

therefore, do not Wish to be limited to the l precise details of construction set forth, but

desire to avail myself of s uch variations and modifications as come Within the 'scope of the appended claims.

'Having' described my invention 'What I Patent is:

claim as new and desire to secure by Letters of a circular fulcrum member; a `plurality of longitudinally curved jaw members arranged about said fulcrum member and adapted to be tilted thereon; and means arranged around said jaW members for maintaining the latter in various tilted positions, substantially as described.

2. In a Wrench, the combination of a fulcrumlmember; a plurality of jaw members arranged about said fulcrum member and adapted to be tilted thereon; and means ar-r ranged around said jaW members and in screw-threaded connection therewith for maintaining said jaw members in various 'tilted positions, substantially as described.

3. In a Wrench, the-combination of a fulcrummember; a plurality of jaw members yarranged about said fulcrum member and.

adapted to be tilted thereon.; and two nuts arranged aroundand in screw-threaded connection with said jaw members for adjustably maintaining said jaw members in various tilted positions, substantially .as described. 'l

4. In' a Wrench, the' combination of a disk having an axial stem; jaw members arranged about said disl' and adapted to be tilted thereon; means` arranged around and iii-threaded connection with said jaw members for adj ustably maintaining the latter in various tilted positions; and means adapted for engagement between adjacent of said jaw members for connecting the latter with said stem, substantially as described.

5. In a wrenclnthe combination of a disk having an axial stem; jaw members arranged about said disk and adapted to be tilted' thereon; means arranged around and in threaded connection with said jaw mem# bers for adjustably maintaining the lat-ter in various tilted positions; and tapering means adapted for engagement between adjacent vot said jaw members for connecting the latter with said stem, substantially as described.

6. In a wrench, the combination of a disk having an axial stem; jaw members arranged about said disk and adapted to be tilted thereon; means arranged around and in threaded connection with said jaw members for adjustably maintaining the latter in various tilted positions; and tapering means mounted on said stem and adapted to be slid to engagement between said jaw members fdr connecting the latter with said stem, substantially as described. j h

7. In a wrench, the combination of a disk having an axial stem; longitudinally curved members arranged about said disk `and l adapted to be tilted upon the periphery thereof; means arranged around and ,in threaded connection with said jaw members for adjustably maintaining the latter in va-j 'f rious tilted positions; and means slidably mounted upon said stem but locked against 'rotation thereon having depending fingers adapted for engagement between adjacent fulcrum member when said nuts of said jaw members for connecting the latter with said stem, substantially \as de-` scribed.

8. ,In a wrench, the combination of a ful crum member; a plurality of jaw members arranged about said fulcrum member and adapted to be tilted thereon; nuts arranged4 around said jaw members and in screwthreaded connection therewith for adjustably maintaining said jaw members in various tilted positions; and resilient means encircling said jaw members for maintaining the same'in close proximity with said are loosened, substantially as described. 9. Ina wrench, the combination pfi'a disk having an axial stem; longitudinally curved members arranged about said disk and adapted to be tilted upon the periphery thereof; means arranged around and in threaded connection with said jaw members for adjustablymaintaining the latter in various tilted positions; means slidably mounted upon said stem but locked against rotation thereon having depending fingers adapted for engagement between adjacent of said jaw members for connecting the latter with said stem; and manually operable, means coperating with said lastlmentoned slidable means for rotating said stem; vsubstantially as described.

10. In a wrench, the combination of a diskhaving an axial stem; longitudinally curved members arranged about said disk and adapted to be tilted-upon the periphery thereof; means arranged around and in -threaded connection with said jaw members for adjustabdy maintaining the latter in various tilted \positions; means slidably mounted upon said stennbut locked against rotation thereon having epending lingers adapted for engagement between adjacent of said jaw m `mbers for connecting the latter with said tem, there being gear teeth formed upon said last xment-ioned slidable means; and man lly operable means meshing with said gear te\eth\for rotating said stem, substantially as described. j

11. In a wrench, the combination of a disk having an axial stem; longitudinally `curved jaw embers arranged about said disk and adapte `to be tilted upon the periphery thereof; means arra ged around and in threaded connection with said jaw members for adjustably maintaining the latter in various tilted positions; a connecting member slidably mounted upon said stem but locked against rotation thereon having depending fingers adapted for engagement-between adjacent of said jaw members for connecting the latter with said stem, there being gear teeth formed upon said connecting member; and aA brace carrying a gear meshing with said gear teeth for manually rotating said stem; substantially as described.

l2. In a wrench, the combination of a disk having an axial stem; longitudinally curved jaw members arranged about said disk and adapted to be tilted thereon; nuts arranged around and in threaded'connection with said jaw members for adjustably maintaining the latter in various tilted positions;

locked against rotation thereon having decurved jaw members arranged about said arranged around and in threaded connection with said jaw members tor adjustably maintaining thelatter in .various tilted 'po- 'stem but locked against rotation thereon having depending tapering fingers adapted a gear slidably mounted upon said stem but- Pending tapering fingers adapted for disk having an axial stem; longitudinally.

disk and adapted to be tilted thereon; nuts I sitions'; a gear slidably mountedv upon said for engagement between adjacent of said jaw members for connecting the latter With said stem; a brace carrying a gear adapted to mesh with said first mentioned gear for manually rotating4 said stem; and brace means for said brace connected with one of said nuts, said connections of said brace with said stem and of said brace means with said nut being interchangeable, substantially as described.

14. In a Wrench, the' combination of a ulcrum member having an axial stem; a plurality of jaw members arranged about said fulcrum member and adapted to be tilted thereon; nuts arranged around 'said jaw members and in screw-threaded connection therewith for adjustably maintaining said `jaw members in Various tilted lposi` i tions; and tapering means connected With said stem adapted for engagement between adjacent osaid jaw members for locking the latter to Said stem, one of said nuts being adapted to engage said tapering means to lock the latter against longitudinal movement, substantially as described. I

Intestimony whereof I have signed my name to this specification in the presence of `two subscribing Witnesses.-

. GEORGE ANDERSEN; Witnesses:

ARTHUR A. OLSON, J osHUA B. H. Po'r'rs. 

